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首页> 外文会议>Image Perception, Observer Performance, and Technology Assessment; Progress in Biomedical Optics and Imaging; vol.7 no.32 >Characterization of a new generation of Computed Radiography system based on line scanning and phosphor needles
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Characterization of a new generation of Computed Radiography system based on line scanning and phosphor needles

机译：基于线扫描和磷光针的新一代计算机放射成像系统的特性

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摘要

A new generation CR system that is based on phosphor needles and that uses a digitizer with line scan technology was compared to a clinically used CR system. Purely technical and more clinically related tests were run on both systems. This included the calculation of the DQE, signal-to-noise and contrast to noise ratios from Aluminum inserts, contrast detail analysis with the CDRAD phantom and the use of anthropomorphic phantoms (wrist, chest and skull) with scoring by a radiologist. X-ray exposures with various dose levels and 50kV, 70kV and 125kV were acquired. For detector doses above 0.8 μGy, all noise related measurements showed the superiority of the new technology. The MTF confirmed the improvement in sharpness: between 1 and 3 lp/mm increases ranged from 20 to 50%. Further work should be devoted to the determination of the required dose levels in the plate for the different radiological applications.
机译：将基于荧光针并使用具有行扫描技术的数字化仪的新一代CR系统与临床使用的CR系统进行了比较。在这两个系统上都进行了纯粹的技术测试和与临床相关的测试。这包括DQE的计算，铝制嵌件的信噪比和对比噪声比，使用CDRAD幻像进行对比细节分析以及使用放射拟人评分的拟人化幻像（手腕，胸部和颅骨）。获得了各种剂量水平以及50kV，70kV和125kV的X射线曝光。对于高于0.8μGy的检测器剂量，所有与噪声相关的测量结果都表明了新技术的优越性。 MTF证实了锐度的提高：在1至3 lp / mm之间增加了20％至50％。应进一步开展工作，以确定不同放射学应用中平板所需的剂量水平。

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